TABLE 5. Number of volunteers that presented Enterobacteriaceae, Pseudomonadaceae, Moraxellaceae and Xanthomonadaceae on the tongue dorsum according to the tongue coating thickness.

Thickness	Positive Cases		Negative Cases		Total
	n	%	n	%	N
0	7	16.28	10	17.55	17
1	14	32.56	15	26.32	29
2	21	48.84	30	52.63	51
3	1	2.32	2	3.5	3

Chi-square test (χ2 = 0.536), (p=0.911).